Saint-Omer Cathedral
Saint-Omer, France
Saint-Omer Cathedral (Cathédrale Notre-Dame de Saint-Omer) is a former Roman Catholic cathedral, a minor basilica, and a national monument of France. It is located in Saint-Omer. It was formerly the seat of the Bishop of Saint-Omer, but the seat was not restored after the French Revolution. The seat of the Bishop of Saint-Omer were instead absorbed into the Diocese of Arras under the Concordat of 1801. The church is still commonly referred to as the "cathedral" however.
Cathedral data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).